package com.jch.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.jch.reggie.common.CustomExcepttion;
import com.jch.reggie.dto.DishDto;
import com.jch.reggie.entity.Dish;
import com.jch.reggie.entity.DishFlavor;
import com.jch.reggie.mapper.DishMapper;
import com.jch.reggie.service.DishFlavorService;
import com.jch.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.quartz.QuartzTransactionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.beans.Transient;
import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceimpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;
    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        //获取菜品id
        Long id = dishDto.getId();
        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
       flavors= flavors.stream().map((item) -> {
            item.setDishId(id);
           log.info("{}",id);
           return item;
       }).collect(Collectors.toList());
       //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询菜品对应的口味信息
       LambdaQueryWrapper<DishFlavor> queryWrapper= new LambdaQueryWrapper<>();
       queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品对应口味数据
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);
        //添加当前提交过来的口味数据
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors= flavors.stream().map((item) -> {
            item.setId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {
        //判断菜品是否是停售转态
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.in(Dish::getId,ids);
        queryWrapper.eq(Dish::getStatus,1);

        int count=this.count(queryWrapper);
        if(count>0){
            //状态是在售，抛业务异常
            throw new CustomExcepttion("菜品在售卖中，不能删除");
        }
        //删除菜品的基本信息
        this.removeByIds(ids);
        //删除菜品的对应口味信息
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.in(DishFlavor::getDishId,ids);
        dishFlavorService.remove(lambdaQueryWrapper);
    }

}
